University of Science and Technology Beijing 5 articles published in JoVE Engineering Measurement of Chladni Mode Shapes with an Optical Lever Method Rong Feng*1, Yan Luo*1, Yixue Dong1, Mengke Ma2, Yuqi Wang2, Jing Zhang3, Wenjiang Ma3, Donghuan Liu4 1School of Materials Science and Engineering, University of Science and Technology Beijing, 2School of Civil and Resource Engineering, University of Science and Technology Beijing, 3Basic Experimental Center for Natural Science, University of Science and Technology Beijing, 4School of Mathematics and Physics, University of Science and Technology Beijing A simple method of measuring the Chladni mode shape on an elastic plate by the principle of an optical lever is proposed. Engineering Quantitative Analysis by Thermogravimetry-Mass Spectrum Analysis for Reactions with Evolved Gases Rongbin Li1, Qian Huang2, Kai Wei2, Hongde Xia2 1School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, 2Institute of Engineering Thermophysics, Chinese Academy of Sciences Precise determination of the evolved gases' flow rate is key to study the details of reactions. We provide a novel quantitative analysis method of equivalent characteristic spectrum analysis for thermogravimetry-mass spectrum analysis by establishing the calibration system of the characteristic spectrum and relative sensitivity, for obtaining the flow rate. Chemistry Fabricating High-viscosity Droplets using Microfluidic Capillary Device with Phase-inversion Co-flow Structure Jiang Li1, Jia Man2, Zhongnan Li2, Haosheng Chen2 1School of Mechanical Engineering, University of Science and Technology Beijing, 2State Key Laboratory of Tribology, Tsinghua University A phase-inversion co-flow device is demonstrated to generate monodisperse high-viscosity droplets above 1 Pas, which is difficult to realize in droplet microfluidics. Chemistry Synthesis of High Purity Nonsymmetric Dialkylphosphinic Acid Extractants Junlian Wang1, Meiying Xie1, Xinyu Liu1, Shengming Xu2 1School of Civil and Resource Engineering, University of Science and Technology Beijing, 2Institute of Nuclear and New Energy Technology, Tsinghua University A protocol for the synthesis of high purity nonsymmetric dialkylphosphinic acid extractants is presented, taking (2,3-dimethylbutyl)(2,4,4'-trimethylpentyl)phosphinic acid as an example. Bioengineering Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold Lindsay N. Nail1, Dawei Zhang2,3, Jessica L. Reinhard1, Melissa A. Grunlan1,2 1Department of Biomedical Engineering, Texas A&M University, 2Department of Material Science and Engineering, Texas A&M University, 3Institute of Advanced Materials and Technology, University of Science & Technology Beijing Scaffolds capable of fitting within cranio-maxillofacial (CMF) bone defects while exhibiting osteoconductivity and bioactivity are of interest. This protocol describes the preparation of a shape memory scaffold based on polycaprolactone diacrylate (PCL-DA) using a solvent-casting particulate-leaching (SCPL) method employing a fused salt template and application of a bioactive polydopamine coating.
